package com.atguigu.web.admin.service.impl;

import com.atguigu.common.minio.MinioProperties;
import com.atguigu.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioProperties minioProperties;//注入minio配置类对象

    @Autowired
    private MinioClient minioClient;//注入minio客户端

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
//用来上传文件的方法，先要判断minio里面有没有桶
        boolean bucketExists = minioClient.bucketExists//检查客户端中是否有桶
                (BucketExistsArgs //minio定义的请求参数类，用于封装检查桶是否存在
//                的请求信息
                        .builder().bucket(minioProperties.getBucketName()).build());

//        如果没有桶，创建并设置访问权限
        if (!bucketExists) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            String config = """
                       {
                         "Statement" : [ {
                           "Action" : "s3:GetObject",
                           "Effect" : "Allow",
                           "Principal" : "*",
                           "Resource" : "arn:aws:s3:::%s/*"
                         } ],
                         "Version" : "2012-10-17"
                       }
                    """.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(config).build());
        }

        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date())+"/"+ UUID.randomUUID().toString()+"_"+
                file.getOriginalFilename();
        minioClient.putObject(PutObjectArgs.builder().bucket(minioProperties.getBucketName()).contentType(file.getContentType()).object(objectName)
                .stream(file.getInputStream(), file.getSize(),-1).build());


//        拼接回显地址
        String url = String.join("/",minioProperties.getEndPoint(),minioProperties.getBucketName(),objectName);
        return url;

    }
}

